examples of ways to sell 1 EUR ticket + taxes in Europe, for a low cost carrier:

- you add big fuel surcharge like myair.com (national carriers do the same, like alitalia on the same market)

- you make sure that you have much more "1 EUR" in one direction and much less on the trip back. Buying one ways with most national carriers in Europe results in 1000 EUR business class fares... if you want your 1 EUR low cost ticket you need to buy a return ticket on the same airline to fly home... and it will usually be something like 50+

- you fly from remote airports that can be accessed only through "chartered busses", you take a commission on this of course, this is the only public transportation available!

- you negociate with the local tourism authority to get free promotion and subsidies for the business you bring

- you try to employ crew from eastern Europe (wonder why ryanair flies to Riga (Latvia) and Poland? because they fly their own crew from their home to a ryanair hub... you can speak Latvian and Polish to many FAs even on flights from Germany to Italy! of course, not because of cost of labour...)

- you screw up stranded passengers like ryanair often does. Example: your flight Venice Paris (of course it's the remote airports, not CDG nor VCE) is cancelled, you can get a refund for your 1+ EUR ticket, or fly to Paris in 3 days as all flights are full tomorrow and the day after, or you can fly tonight to London. You will of course pay yourself the price to get from London to Paris, a mere 100 EUR by train...

- you put a 15 kg free luggage allowance and charge 9-10 USD per kilo extra. Or like ryanair starts doing, you charge each bag checked in, 10 USD / bag if done at airport (5 USD / bag if paid with the flight)

- you offer only credit card payment option and charge a fee for handling the transaction

- and you can add of course undertrained staffs, pilots flying (officially) the maximum number of hours allowed...

... etc...